AWS Certified Solutions Architect Associate Test 4

You can purchase an AMIs from a third party, including AMIs that come with service contracts fromorganizations such as Red Hat. You can also create an AMI and sell it to other Amazon EC2 users.After you create an AMI, you can keep it private so that only you can use it, or you can share it with aspecified list of AWS accounts. You can also make your custom AMI public so that the community canuse it. Building a safe, secure, usable AMI for public consumption is a fairly straightforward process, ifyou follow a few simple guidelines.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/AMIs.html